Numerical simulation of the internal flow in the mixing chamber of a 150MW combined cycle thermal power plant

Abstract This study examines the internal flow dynamics within the mixing chamber of a combined cycle thermoelectric plant (steam-gas), with a particular focus on the distribution of key parameters such as temperature, pressure, and density. Both the continuity and energy equations were subjected to analytical and numerical simulations for validation purposes. In the numerical simulation, a three-dimensional tetrahedral mesh was constructed using Ansys Meshing software, and the resulting data was processed using Ansys Fluent. The turbulence model employed was the k-epsilon model, and the energy equation was also utilized. The results demonstrated the effective transfer of energy and the uniform distribution of temperature and pressure throughout the mixing chamber. This study makes a significant contribution to the field of thermal engineering and provides a robust foundation for future research in the optimization of combined cycle systems. Furthermore, critical areas for design improvement were identified, emphasizing the importance of precise control of operating parameters. The results of the numerical simulations were validated by comparisons with experimental data and previous theoretical studies, thus providing a comprehensive understanding of the internal flow dynamics and their impact on the operating efficiency of the thermal power plant.